<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title></title>
	</head>
	<body>
		<script type="text/javascript">
			//9. 除了用加号+连接字符串，其他还有什么方式？
			document.write("hello" +" " + "world");
			document.write("<br />");
			document.write("Hello"," ","JavaScript");
		</script>
	</body>
</html>
